This sleep restraint was used in the Command Module on the Apollo 8 mission around the Moon. Restraints were placed under the left and right couches and on top of the right couch during flight and could be rolled and stowed when not in use. The lightweight fabric with zippered front was meant to restrain the astronaut from floating freely in the cabin in the zero-gravity environment of space. Straps on the back tie the sleep restraint to the inside of the cabin.
NASA transferred this sleep restraint to the Smithsonian Institution in 1972.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.